Watch List notes:

Byzantine Iconographic PB Seal in the name of Constantine. Circa 10th-11th century AD. Bust of St. Nicholas facing, holding book of Gospels; Ο Ν Ι to left, Κ Ο Λ to right; all within border of dots / +KON CTANT ΚOMBRA(sic) ΡΑΚΛΗ ΡΗ[...] in five lines; all within border of dots. DOC -; Zacos BLS -; Sandrovskaja-Seibt, Byzantinische Bleisiegel der Staatlichen Eremitage mit Familiennamen, 1; Teil -. 8.26g, 24mm.

Condition as seen.

From a private UK collection.